Andriantsilavo held the position of Secretary General of the Ministry of Environment, Water and Forests.[1] She was known as a strong and determined advocate for the long-term conservation of Madagascar's ecology.[2] She was instrumental in organising Madagascar to be the host of the 15th Annual Meeting for CITES in 1999.[3] She developed environmental policies which included: sustainable coastal development;[4] the regulation of the exportation of Madagascar's genetic resources and the intellectual property rights within its traditional heritage.[5] She co-authored articles which include an examination of sustainable production for Prunus africanum and Centella asiatica.[6] She held several roles during her career, including co-chair of the Vision Durban Group (GVD).[6] She was instrumental in the development of the Makira forest partnership, sponsored by Mitusbishi.[7]